论文部分内容阅读
为解决环路热管运行温度波动和传输距离有限的问题,设计一套泵辅助毛细相变回路。实验测试表明,在设计传输距离为2 m,测试热负荷10~140 W,对应热流密度1~13.8 W/cm~2时,系统运行平稳,未出现温度波动。根据蒸发器出口蒸气是否过热,将系统运行特性曲线划分为两个区间,在蒸气过热段,加热面温升较快。蒸发器受热面等温性较好,在实验热负荷范围,加热面测点间最大温差小于1.5℃。随热负荷的增大,蒸发器热阻呈先减小后增大的变化趋势。
In order to solve the problem that the operating temperature of the loop heat pipe fluctuates and the transmission distance is limited, a pump-assisted capillary phase change circuit is designed. Experimental results show that the system runs smoothly without any temperature fluctuation when the designed transmission distance is 2 m, the test heat load is 10 ~ 140 W and the heat flux density is 1 ~ 13.8 W / cm ~ 2. According to the evaporator outlet steam is overheated, the operating characteristics of the system is divided into two intervals, in the steam overheating section, the heating surface temperature rise faster. Evaporator heating surface isotherm is better, in the experimental heat load range, the maximum temperature difference between the heating surface measuring point is less than 1.5 ℃. With the increase of heat load, the thermal resistance of the evaporator decreases first and then increases.